Pocket inhalation apparatus



Mar. 20 11923.

G. H. JCHNSON NHALATION APPARATUS POCKET I Filed Apr.

WWII/Ill/////////////////////////////////////////////////-////////////////M JM I. H 4 W 1M Patented Mar. 2@, 11.9230

POCKET INHALATION APPARATUS.

Application filed April 1,

To all whom it may concern:

Be it known that T, GonwIN HARRY JOHN- soN, a subject of the King ofGreat Britain, residing at Elvetham, Shepperton-on- Thames, Middlesex,England, have invented a new or Improved Pocket Inhalation rippzurat-us, of which the following is a specifica tlon.

This invention relates to a new or i1nproved pocket inhalation apparatusand has for its object the production of a highly eiiicient inhaler, ofcompact term and in expensive manufacture.

The present invention comprises essentially a casing adapted to becoi'nfortably carried in the pocket, one or more capsules or receptaclesadapted to contain the gas or medicament and held within the casing, achamber adapted to be put into communication with the interior of saidcapsule or capsules, means for putting said chamber into communicationwith the interior of said capsule or capsules, a series of expansionchambers communicating with one another and held within said casing, anoutlet from the last chamber of the series provided. with a nozzle ormeans for inhaling the gas or medicament, and a valved opening puttingthe gas or medicament chamber into communication with the first chamberof the series of expansion chambers.

I will now more particularly describe this invention making reference tothe accompanying drawing in which the figure is a sectional view in sideelevation-on an enlarged scale-of one embodiment of this invention.

Within a suitably shaped casing a which may conveniently be formed fromsheet metal is formed a compartment (4 for the re ception of a removablecapsule or receptacle 6 adapted to contain the gas or medicament underpressure. This capsule b is formed as a miniature high pressure gasbottle, preferably from steel, and is provided with a valve Z2 adaptedto contact with a valve seating formed in a nozzle 6 in the reduced endor mouth of the bottle. The upper end of the compartment a is closed bya part a provided with a chamber a the inlet to which is formed in onewith a spigot a adapted to pass freely through the nozzle b and engagethe valve 6 when desired. The lower side of the part a is formed toreceive the reduced end of the capsule or bottle 6 and make a gas tightjoint there- 1922. Serial 1W0. 548,676.

with. In order to put the interior of the capsule or bottle 6 intocommunication with the chamber (4 the bottle 6 is moved upwardly so thatthe spigot a opens the valve 6 preferably by means of a plug a screwthreaded into the lower end of the compartment (4 The plug a is providedwith any suitable means for rotating it, for instance by means of ahinged finger piece a or by forming a slot in its underside adapted toreceive the edge of a coin or in other convenient manner.

The outlet from the chamber a is connected to a series of expansionChamber's 0c in communication with one another and suitably held withinthe casing 64. These expansion chambers are preferably formed from asingle length of tubing 0 having restrictions 0 suitably located withinits length so as to form chambers having a gradually increasingcapacity. The tubing 0 may be arranged within the casing as shown orspirally or in other convenient manner.

The outlet from the chamber a is controlled by a valve preferably aspring controlled valve d operable by depressing a finger piece al onthe outside of the casing. The outlet from the last expansion chamber (2is in communication with a nozzle or means for inhaling the gas ormedicament, preferably by arranging a telescopic tube 6, the outer endof which is formed with a perforated forked termination 6 adapted to beinserted within the nostrils of the user, capable of being withdrawnoutside the casing a, for use, through a closable aperture (0 therein.

Instead of forming the capsules as miniature steel bottles which isnecessary when a gas or the like is employed under pressure, thecapsules may be made of gelatine or similar material adapted to containa volatile medicament in which case the spigot a is in the form of ahollow needle or pin adapted to perforate the capsule to release itscontents.

In some cases provision may be made for the casing to contain two ormore capsules or bottles adapted to contain different gases ormedicament in which case two or more valves are provided for regulatingthe supply to the expansion chambers.

What I claim and desire to secure by Letters Patent is:

1. A pocket inhalation apparatus comprising in combination a casing, acapsule adapted to contain the gas or medicament and held Within thecasing,a chamber adapted to'be put into communication With the interiorof said capsule means for putting the said chamber into communicationwith the interior of said capsule, a series of expansion chamberscommunicating With one another and held Within said casing, an outletfrom the last chamber provided with means for inhaling the gas ormedicament and a valved opening putting the gas or medicament chamberinto communication with the first chamber of the series of expansionchambers, as set "forth.

2. A pocket inhalation apparatus comprising a casing,:a compartmenttherein, a removable capsule adapted to contain the gas or medicamentheld Within said compartment, a chamber formed adjacent to the saidcompartment and having an inlet thereto communieating With the interiorout the capsule, means for putting the chamber and capsule intocommunication, a series oi expansion chambers, each of increasingcapacity held Within the casing, an outlet from said chamber incommunication With the first expansion chamber of the series, a

spring controlled valve operable from the outside of the casing andcontrolling the outlet from said chamber, and a nozzlev for inhaling thegas or medicament-normally held Within the casing but adapted to projecttherefrom in use and connected with the last expansion chamber, as setforth.

3. A pocket inhalation apparatus comprising a casing adapted to becomfortably carried in a pocket, a compartment fixed therein having aclosed upper end and an open lower end extending through the easing, acapsule adapted to contain the gas or medicament removably held gastightly Within the compartment, a chamber carried by the closed upperend of the compartment, a passage formed between the chamber and thecompartment means for putting the in-- terior of the capsule intocommunication with said chamber, a series of expansion chambers formedfrom a single tube With restrictions there n, an outlet from saidchamber connected to the one end of the tube, a spring controlled Valveoperable from r the outside of the casing and controlling the outletfrom the chamber, and a nozzle for inhaling the gas or medicamentconnected With the other end of the tube, as set forth.

GODW IN HARRY JOHNSON.

